There are many different solutions that must be employed today to provide proper data protection for business data. Data loss can occur when users or applications accidentally delete one or more files. Data needs to be protected from virus infection. Data must be restored or recreated when a single disk drive or an entire disk subsystem fails. Finally, disk data needs to be recovered when one or more systems are damaged or lost after a site disaster. To prevent data loss, there are a number of independent data protection solutions that are being employed by IT organizations today, including: